The Intruder alternative
If you are evaluating Intruder alternatives, OnScanner runs its own specialist engines in a single live pass and extends coverage into privacy and tracker analysis, email authentication, and TLS and WAF posture, prioritized with EPSS and CISA KEV. It also ships a hosted MCP server for AI agents and opt-in AI Findings. Here is an honest, source-linked comparison so you can decide for yourself.
Prefer a straight side-by-side? See the full OnScanner vs Intruder comparison.
TL;DR
Choose OnScanner when you want the broadest coverage per scan, fully automated: live, never-cached scans with safe exploit verification and zero-day heuristics, EPSS and CISA KEV prioritization, deep technology and end-of-life detection, and 40+ privacy and tracker checks with email, TLS and WAF posture. Turn on AI Findings and it writes the executive summary, ranks your Top Risks, chains findings into MITRE ATT&CK attack paths, drafts remediation, and generates SOC 2, ISO 27001, GDPR, PCI-DSS and HIPAA compliance reports. Free tier and a hosted MCP server included.
Intruder is a great choice when you want continuous attack surface monitoring with curated, noise-reduced findings and integrations aimed at lean teams that want a managed feel.
Feature comparison
Verified against public product pages on 2026-07-02. Cells marked "Not listed" mean the capability is not described on the vendor's public docs as of that date, not that it is impossible.
| Capability | OnScanner | Intruder |
|---|---|---|
| External (unauthenticated) scanning | YesThe anonymous attacker's view, no agents | YesExternal vulnerability scanning assesses 'your internet-facing infrastructure for known vulnerabilities that an attacker, who… |
| Authenticated scanning | YesScan behind login with credentials | YesAuthenticated web app scanning behind login pageshentication license/add-on… |
| Privacy, tracker & consent scanning | Yes40+ categories incl. fingerprinting | Not listed*Not listed on public docs as of 2026-07-02 |
| CVE intelligence (EPSS & CISA KEV) | YesCVE/CPE matching with EPSS + KEV context | Yes'Intruder helps you prioritize real threats by blending severity scores with exploit intelligence (EPSS, KEV list) and insights… |
| Active exploit verification | YesSafe, non-destructive, in-band probes | PartialAI pentesting agents 'interact directly with your target, sending requests, analyzing responses, and probing for exposed data to… |
| Patch-status & end-of-life detection | YesVendor/distro patch data + EOL flags | PartialScans detect 'missing patches, misconfigurations, common mistakes, encryption weaknesses, information leakage, unintentionally… |
| Email security (SPF, DKIM, DMARC) | Yes | Not listed*Not listed on public docs as of 2026-07-02 |
| WAF detection | Yes | YesPlatform flags 'Web application firewall (WAF) detected' on target detail pages, targets can be filtered by firewall… |
| Continuous monitoring | YesScheduled scans + change detection | Yes'24/7 automated scanning for new threats' plus emerging threat scans that 'check your systems within hours of new risks… |
| REST API | Yes | YesPublic REST API (developer hub): manage targets, kick off scans, retrieve issues/results, CI/CD integration |
| MCP server for AI agents | YesHosted: mcp.onscanner.com | YesFirst-party open-source MCP server (github.com/intruder-io/intruder-mcp, announced 2025-05-15) lets AI agents such as Claude add… |
| AI analysis, remediation & compliance reports | YesOpt-in AI Findings + AI Compliance (SOC 2, ISO 27001, GDPR, PCI-DSS, HIPAA) | PartialGregAI virtual analyst; AI-powered pentests are a separately priced service |
| Transparent self-serve pricing | YesFree tier; Professional $60/mo | PartialFree plan, 14-day trial, and per-target pricing model are public, and AI pentests are listed from $3,500/test, but specific… |
Why teams pick OnScanner
- Enterprise-grade coverage, fully automated: OnScanner's own specialist engines, built in-house, run in parallel on every scan.
- Every scan is live and never cached, with safe active exploitation probes that verify what is actually exploitable and zero-day heuristics that flag unknown vulnerabilities before a CVE exists.
- Deep technology detection with patch-status and end-of-life flags, so you know exactly what is running and what is out of support.
- Exploit-aware prioritization: CVE and CPE matching enriched with EPSS scores and the CISA KEV catalog, so you fix what attackers actually use.
- Opt-in AI Findings: an executive summary, ranked Top Risks, and clear per-finding explanations with remediation your developers can act on.
- Vulnerability chaining: AI Findings links related results into real attack paths mapped to the MITRE ATT&CK kill chain.
- AI Compliance reports on demand: SOC 2, ISO 27001, GDPR, PCI-DSS and HIPAA assessments generated from your scan results.
- 40+ privacy, tracker, fingerprinting and consent checks plus email (SPF, DKIM, DMARC), TLS and WAF posture in the same pass.
- Continuous monitoring with scheduled scans and 24/7 change detection, plus a REST API and hosted MCP server on every plan, free tier included.
When Intruder fits
- You are a lean team that wants one tool for external and internal vulnerability scanning, authenticated web app testing, and cloud misconfiguration checks across AWS, Azure, and GCP.
- You want emerging threat scans that check your systems when new critical vulnerabilities appear in the wild.
- You want triage help built in: exploit-likelihood filtering that blends EPSS and the CISA KEV catalog, a virtual analyst, compliance integrations (Drata, Vanta, Jira, Slack), and an MCP server.
The difference in one line: OnScanner runs its own engines in one live pass and adds 40+ privacy and tracker checks, zero-day heuristics, and opt-in AI compliance reports, from a free tier.
Pricing
OnScanner is self-serve with a free Starter tier and Professional at $60 per month. Intruder: custom (free tier exists; paid plan figures not displayed on the public pricing page as of 2026-07-02) (Free plan plus paid tiers (Cloud, Pro, Enterprise; fine print also references Essential). Paid pricing is 'a base fee plus a small fee-per-target'; specific subscription prices are not displayed statically and require the interactive calculator or sales contact. Enterprise is quoted separately. AI-powered web application pentests start at $3,500/test. 14-day free trial. Verified 2026-07-02.)
Frequently asked questions
Is OnScanner a good Intruder alternative?
Yes, if you want one live pass that covers more than vulnerabilities. OnScanner runs its own engines and adds 40+ privacy and tracker checks, email SPF, DKIM and DMARC posture, and TLS and WAF analysis, all prioritized with EPSS and CISA KEV. It ships a hosted MCP server and opt-in AI Findings, with a free Starter tier to try first.
How is OnScanner different from Intruder?
Both prioritize findings with EPSS and CISA KEV context. The difference is scope per scan: OnScanner folds privacy, tracker and consent scanning, email and TLS posture, and opt-in AI compliance reports (SOC 2, ISO 27001, GDPR, PCI-DSS, HIPAA) into the same live pass, so you get security and privacy together in one report.
Can I try OnScanner before switching from Intruder?
Yes. OnScanner has a free Starter tier and self-serve signup with no sales call, so you can scan a target you own and compare the findings against your current tool before you change anything.
Does OnScanner work with AI agents like Intruder's integrations?
OnScanner ships a hosted MCP server on every plan, so agents like Claude and Cursor can start scans, poll progress, and read findings directly. Opt-in AI Findings then summarize results, chain them to the MITRE ATT&CK kill chain, and draft compliance reports when you enable them.
Sources
Every Intruder fact above was checked against these public pages on 2026-07-02. If something has changed since, tell us at support@onscanner.com and we will correct it.
- Intruder homepage
- Intruder pricing
- External vulnerability scanning (Intruder)
- Risk-based vulnerability management (Intruder)
- Vulnerability management platform (Intruder)
- AI pentesting (Intruder)
- Authenticated web app scanning announcement (Intruder)
- Product updates, July 2024 (Intruder blog)
- Claude and Intruder MCP post (Intruder blog)
- Intruder developer API docs
- Intruder MCP server (GitHub)
See what OnScanner finds on your site
Live, never-cached security and privacy scanning: OWASP Top 10, CVE intelligence with EPSS and KEV, 40+ privacy checks, REST API and MCP server. Free Starter tier, no sales call.